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Why should Java ThreadLocal variables be static

...code sample. CurrentUser - stores the current user id in ThreadLocal TestService - Simple service with method - getUser() to fetch the current user from CurrentUser. TestThread - this class used for creating multiple threads and set userids concurrently . public class CurrentUser public class ...
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Differences between Perl and PHP [closed]

...ype, of which Perl has three, and the type specifier is part of the name (called a "sigil"), so $foo is a different variable than @foo or %foo. (related to the previous point) Perl has separate symbol table entries for scalars, arrays, hashes, code, file/directory handles and formats. Each has its o...
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twig: IF with multiple conditions

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How to use SCNetworkReachability in Swift

... imported C structs have a default initializer in Swift, which initializes all of the struct's fields to zero, so the socket address structure can be initialized with var zeroAddress = sockaddr_in() sizeofValue() gives the size of this structure, this has to be converted to UInt8 for sin_len: zer...
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What is a “thread” (really)?

... a set belonging to a different thread, typically as part of the interrupt servicing logic. – Ben Voigt Mar 5 '11 at 5:31 5 ...
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LINQ to SQL: Multiple joins ON multiple Columns. Is this possible?

...the same. The names part is a gotcha. This example won't compile even if all columns are varchars join T2 in db.tbl2 on new { T1.firstName, T1.secondName } equals new { T2.colFirst, T2.colSecond }. If you change it to this, it will compile however, join T2 in db.tbl2 on new { N1 = T1.firstName, N...
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Best Practice - NSError domains and codes for your own project/app

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Converting from Integer, to BigInteger

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How to get the clicked link's href with jquery?

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How to configure IntelliJ (also Android Studio) redo shortcut to CTRL+Y instead of CTRL+SHIFT+Z?

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